Update I have implemented the Hungarian Algorithm in the same steps provided by the link you posted: Hungarian algorithm Here’s the files with comments: Github Algorithm (Improved greedy) for step 3: (This code is very detailed and good for understanding the concept of choosing line to draw: horizontal vs Vertical. But note that this step … Read more
Dynamic programming is applicable to problems exhibiting the properties of: overlapping subproblems, and optimal substructure. Optimal substructure means that you can greedily solve subproblems and combine the solutions to solve the larger problem. The difference between dynamic programming and greedy algorithms is that with dynamic programming, there are overlapping subproblems, and those subproblems are solved … Read more
Based on Wikipedia’s articles. Greedy Approach A greedy algorithm is an algorithm that follows the problem solving heuristic of making the locally optimal choice at each stage with the hope of finding a global optimum. In many problems, a greedy strategy does not in general produce an optimal solution, but nonetheless a greedy heuristic may … Read more
Yes, it does. One method for computing the maximum weight spanning tree of a network G – due to Kruskal – can be summarized as follows. Sort the edges of G into decreasing order by weight. Let T be the set of edges comprising the maximum weight spanning tree. Set T = ∅. Add the … Read more
A set which forms a matroid (https://en.wikipedia.org/wiki/Matroid) can be used to solve the coin changing problem by using greedy approach. In brief, a matroid is an ordered pair M = (S,l) satisfying the following conditions: S is a finite nonempty set l is a nonempty family of subsets of S, called the independent subsets,such that … Read more
Recall that in Dijkstra’s algorithm, once a vertex is marked as “closed” (and out of the open set) – the algorithm found the shortest path to it, and will never have to develop this node again – it assumes the path developed to this path is the shortest. But with negative weights – it might … Read more
Neither basic nor extended Posix/GNU regex recognizes the non-greedy quantifier; you need a later regex. Fortunately, Perl regex for this context is pretty easy to get: perl -pe ‘s|(http://.*?/).*|\1|’